Brought this back for further update.

The Blue Devil did not hold. I have just torn this down once again. It now looks like the water pump shaft seal failed, nothing the BD could have fixed. It got to be so extreme I could not drive it. The weep hole takes leak to the same spot on the PS of the engine. I now believe this was the original leak and the second one.

I also developed an intake leak which I thought was a leak from the intake plenum. After teardown it is not there but from the new head gasket I needed at the last TB service where I needed to take the head off to retrieve the valve dropped inside doing the valve seals.

This is the last attempt to repair this engine. I have a rebuilt WP to place the leaky one and I'm going to try the Blue Devil head gasket sealer. If this does not work the truck will be up for sale. I've no time or patience to tear it down again. 25 years of use is pretty good.

It'll make a good project or parts truck.